-diff --git a/core/string/ustring.cpp b/core/string/ustring.cpp

-index 6a59942a56..773445edb6 100644

---- a/core/string/ustring.cpp

-+++ b/core/string/ustring.cpp

-@@ -1644,6 +1644,35 @@ String String::hex_encode_buffer(const uint8_t *p_buffer, int p_len) {

- return ret;

- }

-

-+Vector<uint8_t> String::hex_decode() const {

-+ ERR_FAIL_COND_V_MSG(length() % 2 != 0, Vector<uint8_t>(), "Hexadecimal string of uneven length.");

-+

-+#define HEX_TO_BYTE(m_output, m_index) \

-+ uint8_t m_output; \

-+ c = operator[](m_index); \

-+ if (is_digit(c)) { \

-+ m_output = c - '0'; \

-+ } else if (c >= 'a' && c <= 'f') { \

-+ m_output = c - 'a' + 10; \

-+ } else if (c >= 'A' && c <= 'F') { \

-+ m_output = c - 'A' + 10; \

-+ } else { \

-+ ERR_FAIL_V_MSG(Vector<uint8_t>(), "Invalid hexadecimal character \"" + chr(c) + "\" at index " + m_index + "."); \

-+ }

-+

-+ Vector<uint8_t> out;

-+ int len = length() / 2;

-+ out.resize(len);

-+ for (int i = 0; i < len; i++) {

-+ char32_t c;

-+ HEX_TO_BYTE(first, i * 2);

-+ HEX_TO_BYTE(second, i * 2 + 1);

-+ out.write[i] = first * 16 + second;

-+ }

-+ return out;

-+#undef HEX_TO_BYTE

-+}

-+

- void String::print_unicode_error(const String &p_message, bool p_critical) const {

- if (p_critical) {

- print_error(vformat("Unicode parsing error, some characters were replaced with spaces: %s", p_message));

-diff --git a/core/string/ustring.h b/core/string/ustring.h

-index 28e3af92c5..90034b1b07 100644

---- a/core/string/ustring.h

-+++ b/core/string/ustring.h

-@@ -321,6 +321,8 @@ public:

- static String chr(char32_t p_char);

- static String md5(const uint8_t *p_md5);

- static String hex_encode_buffer(const uint8_t *p_buffer, int p_len);

-+ Vector<uint8_t> hex_decode() const;

-+

- bool is_numeric() const;

-

- double to_float() const;

-diff --git a/core/variant/variant_call.cpp b/core/variant/variant_call.cpp

-index ae15158836..13e9da37f2 100644

---- a/core/variant/variant_call.cpp

-+++ b/core/variant/variant_call.cpp

-@@ -1734,6 +1734,7 @@ static void _register_variant_builtin_methods() {

- bind_string_method(to_utf8_buffer, sarray(), varray());

- bind_string_method(to_utf16_buffer, sarray(), varray());

- bind_string_method(to_utf32_buffer, sarray(), varray());

-+ bind_string_method(hex_decode, sarray(), varray());

- bind_string_method(to_wchar_buffer, sarray(), varray());

-

- bind_static_method(String, num_scientific, sarray("number"), varray());

-diff --git a/doc/classes/String.xml b/doc/classes/String.xml

-index 1f4ffa417d..854bb2b2f8 100644

---- a/doc/classes/String.xml

-+++ b/doc/classes/String.xml

-@@ -313,6 +313,24 @@

- [b]Note:[/b] Strings with equal hash values are [i]not[/i] guaranteed to be the same, as a result of hash collisions. On the countrary, strings with different hash values are guaranteed to be different.

- </description>

- </method>

-+ <method name="hex_decode" qualifiers="const">

-+ <return type="PackedByteArray" />

-+ <description>

-+ Decodes a hexadecimal string as a [PackedByteArray].

-+ [codeblocks]

-+ [gdscript]

-+ var text = "hello world"

-+ var encoded = text.to_utf8_buffer().hex_encode()

-+ print(buf.hex_decode().get_string_from_utf8())

-+ [/gdscript]

-+ [csharp]

-+ var text = "hello world";

-+ var encoded = text.ToUtf8Buffer().HexEncode();

-+ GD.Print(buf.HexDecode().GetStringFromUtf8());

-+ [/csharp]

-+ [/codeblocks]

-+ </description>

-+ </method>

- <method name="hex_to_int" qualifiers="const">

- <return type="int" />

- <description>

-diff --git a/doc/classes/StringName.xml b/doc/classes/StringName.xml

-index 2140c53e20..c41fcac033 100644

---- a/doc/classes/StringName.xml

-+++ b/doc/classes/StringName.xml

-@@ -296,6 +296,24 @@

- [b]Note:[/b] Strings with equal hash values are [i]not[/i] guaranteed to be the same, as a result of hash collisions. On the countrary, strings with different hash values are guaranteed to be different.

- </description>

- </method>

-+ <method name="hex_decode" qualifiers="const">

-+ <return type="PackedByteArray" />

-+ <description>

-+ Decodes a hexadecimal string as a [PackedByteArray].

-+ [codeblocks]

-+ [gdscript]

-+ var text = "hello world"

-+ var encoded = text.to_utf8_buffer().hex_encode()

-+ print(buf.hex_decode().get_string_from_utf8())

-+ [/gdscript]

-+ [csharp]

-+ var text = "hello world";

-+ var encoded = text.ToUtf8Buffer().HexEncode();

-+ GD.Print(buf.HexDecode().GetStringFromUtf8());

-+ [/csharp]

-+ [/codeblocks]

-+ </description>

-+ </method>

- <method name="hex_to_int" qualifiers="const">

- <return type="int" />

- <description>

-diff --git a/modules/mono/glue/GodotSharp/GodotSharp/Core/StringExtensions.cs b/modules/mono/glue/GodotSharp/GodotSharp/Core/StringExtensions.cs

-index df67e075ac..d53bb9f536 100644

---- a/modules/mono/glue/GodotSharp/GodotSharp/Core/StringExtensions.cs

-+++ b/modules/mono/glue/GodotSharp/GodotSharp/Core/StringExtensions.cs

-@@ -728,6 +728,26 @@ namespace Godot

- return hash;

- }

-

-+ /// <summary>

-+ /// Decodes a hexadecimal string.

-+ /// </summary>

-+ /// <param name="instance">The hexadecimal string.</param>

-+ /// <returns>The byte array representation of this string.</returns>

-+ public static byte[] HexDecode(this string instance)

-+ {

-+ if (instance.Length % 2 != 0)

-+ {

-+ throw new ArgumentException("Hexadecimal string of uneven length.", nameof(instance));

-+ }

-+ int len = instance.Length / 2;

-+ byte[] ret = new byte[len];

-+ for (int i = 0; i < len; i++)

-+ {

-+ ret[i] = (byte)int.Parse(instance.AsSpan(i * 2, 2), NumberStyles.AllowHexSpecifier);

-+ }

-+ return ret;

-+ }

-+

- /// <summary>

- /// Returns a hexadecimal representation of this byte as a string.

- /// </summary>